Dynamic programming and Munkres algorithm for optimal photovoltaic arrays reconfiguration

[Display omitted] •Optimal design for PV plant.•Switching matrix design.•Switching operations balancing.•Comparison between reconfiguration algorithms. In this paper, an original formulation of the control problem for optimal PV array reconfiguration, following a Total Cross Tied layout, is proposed...

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Vydáno v:Solar energy Ročník 122; s. 347 - 358
Hlavní autoři: Sanseverino, Eleonora Riva, Ngoc, Thanh Ngo, Cardinale, Marzia, Li Vigni, Vincenzo, Musso, Domenico, Romano, Pietro, Viola, Fabio
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Elsevier Ltd 01.12.2015
Pergamon Press Inc
Témata:
Algorithms
Control systems
Dynamic programming
Matrix
Mismatch
Optimization
Photovoltaic cells
Photovoltaic modules
Photovoltaics
Reconfiguration
Solar energy
Solar panels
Switching
Working conditions
Photovoltaic modules
Mismatch
Optimization
Reconfiguration
ISSN:0038-092X, 1471-1257
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Shrnutí:[Display omitted] •Optimal design for PV plant.•Switching matrix design.•Switching operations balancing.•Comparison between reconfiguration algorithms. In this paper, an original formulation of the control problem for optimal PV array reconfiguration, following a Total Cross Tied layout, is proposed. The formulation follows the well-known subset sum problem, which is a special case of the knapsack problem. The reconfiguration is a measure devoted to mitigate the mismatch effect and maximize the output power of small photovoltaic plants under non-homogeneous working conditions. Therefore, reconfiguration means changing the connections of the solar panels adaptively by a dynamic switching matrix. The control system implements an easy dynamic programming algorithm to change the switches layout. The use of the Munkres assignment method in a post-processing module makes the algorithm able to obtain the optimum configuration for which it is possible to balance and minimize the aging of the switches within the switching matrix.
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content type line 14
ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2015.09.016